Add 90/50 and 70/21
1st number: 1 40/50, 2nd number: 3 7/21
90/50 + 70/21 is 77/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
90/50 = 90 × 21/50 × 21 = 1890/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
70/21 = 70 × 50/21 × 50 = 3500/1050 - Add the two like fractions:
1890/1050 + 3500/1050 = 1890 + 3500/1050 = 5390/1050 - 5390/1050 simplified gives 77/15
- So, 90/50 + 70/21 = 77/15
In mixed form: 52/15
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